On March 11, 2004, a 43-year-old male career fire fighter drowned while training for fire department dive rescue operations. The victim was diving with another dive rescue team member in a large, partially ice-covered lake when, after his partner lost visual track of him, the victim failed to surface. The dive partner notified authorities through a pedestrian and a commercial dock attendant while he continued searching from the land docks and parking area. Multiple governmental agencies and private commercial divers conducted an organized search for the missing diver, but the victim's body was not found or recovered until the next day. He was pronounced dead on-scene. NIOSH Investigators concluded that, to minimize the risk of similar occurrences, fire departments should: 1. ensure that an experienced backup diver, a safety boat, extra air tanks, and a medical unit is on the scene of all training dives; and, 2. ensure that Standard Operating Guidelines (SOG's) establish and enforce separate but parallel diver training guidelines along with emergency rescue diving guidelines.